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https://opensea.io/collection/evm-6
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✳️ dcposch
@dcposch.eth
How do I know, via RPC, that I have all logs up thru block X? eth_getLogs and _getFilterLogs doesn’t seem to do this… give it a toBlock in future and it still returns (necessarily partial) results
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Scott Sunarto
@scott
hmm.. would need to learn more about your node setup. i think alchemy/infura have # of logs limit and sometime would silently drop logs. if you are running your own node, i'd check for config that silently prune historical logs or limit # of logs on eth_getLogs
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✳️ dcposch
@dcposch.eth
Not about pruning old logs, more about making sure you have the latest. I want to write a function that returns “here’s your current balance, and all new transfers that went into that balance” Seems like a common use case!
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Scott Sunarto
@scott
try passing "latest" to `toBlock` is this what you are looking for? fwiw, you probably want an indexer (checkout https://ponder.sh/) to do the heavy lifting here by sifting through all new incoming blocks. could also be fun to write your own!
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✳️ dcposch
@dcposch.eth
Yes this is for my indexer The trouble is - Call eth_call with “latest” to get the current balance - Call eth_logs “latest” for logs No guarantee that they match! You might be missing a transfer needed to explain the balance.
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✳️ dcposch
@dcposch.eth
So what if you fetch the latest block first , then pass that block number explicitly to eth_call and _getLogs? As far as I can tell , eth_logs will return successfully and still not guarantee that it actually has all logs thru that block. Wack
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Scott Sunarto
@scott
that's odd. i know eth_getlogs is flaky at large block number range, but it should be fairly reliable if the range is small enough
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timdaub
@timdaub.eth
it is reliable for a small enough block range. But you have to carefully read the Alchemy and Infura docs. Many edge cases
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